The United States, South Korea and Japan have agreed to share classified information about nuclear threats from North Korea. The U.S. Defense Department says the agreement took effect on Monday. The intelligence will pass through the Defense Department.

Researchers are now using three-dimensional, or 3D printing to create models of the human heart to help heart specialists. The heart doctors can use the models to better help patients before an operation.

From VOA Learning English, this is the Agriculture Report. For the third straight year, the World Rice Conference has voted Cambodian rice as the worlds best. This year Cambodia shares the award with Thailand.

The Kenyan coastal city of Mombasa, and its beautiful beaches, are usually full of thousands of people from Kenya and Europe during the Christmas holiday. But this year, there are few people on the beaches or in the city's many hotels. That is because of a recent series of terror attacks linked to Somali militants.

From VOA Learning English, this is the Technology Report. Can you imagine riding around the streets of your hometown on a skateboard without wheels? In the late 1980s, film director Robert Zemeckis showed a skateboard floating above the ground in his movie Back To The Future Part II.

Wildlife conservationists in Kenya are trying to save a rare kind of rhinoceros. So many northern white rhinos have been hunted and killed that they are almost extinct. There are only five northern white rhinos left. The workers hope they can save the rhinos by helping them breed.

South Korea has increased security at its nuclear power centers. South Korea took action after computer hackers entered the power centers' computer networks and released sensitive documents on the Internet.